Machine for corrugating pipe or tubing



(NO MOdeL) 2 SHGBtS-ShE-Bt 1. S. S. SERGEANT. MACHINE FOR GOREUGATINGPIPE OR TUBING VZZIJ.1.

Patented 0 1-,

naw? (No Model.) 2 Sheets-Sheet 2. S. S. SERGEANT.

MACHINE FOR GORRUGATING PIPE OR TUBING. No. 569,431. Patented 001. 13,18-96.

UNITED STATES PATENT OFFICE.

SAMUEL S. SERGEANT, OF CHICAGO, ILLINOIS.

MACHINE FOR CORRUGATING PIPE OR TUB|NG.'

SPECIFICATION forming part of Letters Patent No. 569,431, dated October13, 1896.

Application filed February 17, 1896. Serial No. 579,473. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL S. SERGEANT, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Machines for CorrugatingPipe or Tubing, of which the following is a specification.

This invention relates to improvements in a tool or machine to beemployed for forming corrugations in pipe or tubing after said pipe ortubing has been made; and it consists in certain peculiarities of theconstruction, novel arrangement, and operation of the various partsthereof, as will be hereinafter more fully set forth and specificallyclaimed.

The objects of my invention are, first, to provide a machine forcorrugating pipe or tubing which shall be simple and inexpensive inconstruction, strong and durable, and effective in operation; second,such a machine which shall form the corrugations with uniformity and ina rapid and easy manner; third, a corrugating-machine the parts of whichmay be so adjusted as to operate on and form any number of corrugationsin pipes or tubes of various sizes.

Still another object of my invention is to so construct and arrange theparts that the traveler may be returned to its normal position orstarting-point without reversing the motion of the machine.

In order to enable others skilled in the art to which my inventionpertains to make and use the same, I will now proceed to describe it,referring to the accompanying drawings, in which Figure 1 is a plan viewof my machine, foreshortefied for the convenience of illustration andshowing it mounted on a frame or support and the parts in position readyfor operation. Fig. 2 is a central longitudinal sectional view taken online 2 2 of Fig. 1, showing a portion of the corrugating mechanism witha core in position therein. Fig.

of said disks.

of the traveler and one of its segmental releasing-nuts, taken on line 55 of Fig. 6 and showing a portion of one of the operatingscrews inelevation. Fig. 6 is a view in elevation, partly in section, taken online (3 6 of Fig. 1, showing a portion of the traveler and one of itssegmental releasing-nuts. Fig. 7 is a detached perspective view of oneof the clamping-arms provided with a corrugating wheel or roller, andFig. 8 is a perspective view of a piece of pipe or tubing after beingcorrugated by means of my machine.

Similar letters refer to like parts throughout the different views ofthe drawings.

A represents the main or supporting frame, which may be of any suitablesize, form, and material, but usually rectangular, as shown in thedrawings. Upon this frame or support, and having their bearin gs in theends thereof, are located the screw-shafts A for operating the travelerB, which carries the corrugating mechanism, as will be presentlyexplained. On one end of each of these screw-shafts is secured a coggedgear I), which meshes with a pinion I), mounted on a shaft b journaledon the main frame, which shaft is provided with a pulley 19 to which thedriving power may be applied by means of a belt or otherwise. Near theends of each of the screwshafts A, on which are mounted the gears b, issecured by means of a set-screw c a collar 0, which is employed as abuffer or guide for the segmental releasing-nuts I) of the traveler.

As shown in Fig. 1 of the drawings, the screw-shafts A are parallel witheach other and pass through the guide plate or piece B for theclamping-arms E, which guide-piece extends across the main frame, asshown. The travelerB is formed with a central opening b through whichthe tube or piping F and core F therefor may pass in the operation ofthe machine. Near each of its ends the travelerB is provided withtapering openings 11 for the reception and operation of the sectional orsegmental releasing-nuts D, which, as shown in Figs. 5 and G of thedrawings, are preferably formed of three pieces (1,.(1, and (1substantially triangular in cross-section and tapering toward theirfront portions to correspond to the taper of the opening Z2 in thetraveler in which they operate.

The rear surface of the traveler is provided with a number of recesses anear the openings b for the reception and retention of springs a, whichnest in said recesses and contact at their outer portions with theflanges (Z of thereleasing-nuts and serve to hold the segments thereofin the position indicated by dotted lines in Fig. 5 of the drawings,when it is desired to retract the traveler. The segments of thereleasing-nuts are secured to the traveler by means of arms a which arepivoted at one of their ends to the traveler and at their other ends tothe segmental pieces, and for this purpose the segments are formed withrecesses a on their rear portions for the insertion of pivot-pins (L asshown in Fig. 6 of the drawings. The screw-shafts A pass throughsuitable openings A in the cross or guide piece B, which is secured tothe traveler B by means of sui able rods a one of which rods is providedwith a scale a for regulating the depth of the corrugations. The sidepieces of the main or supporting frame A are formed with longitudinalgrooves A" on their adjacent surfaces for the reception and operation ofthe projections A on the ends of the traveler, and like parts A on theguide-piece B, which is formed with a central opening I) for the passageof the tube F and core F or mandrel. In the surface of the piece B,adjacent to the traveler, are formed a series of grooves b extendingradially from the opening b which are for the reception and guidance ofthe free ends of the clamping-arms E, which arms, as is clearly shown inFigs. 2, 3, and 7, are bowed or somewhat curved on their outer surfacesand are beveled on their inner surfaces, as shown at e, in order toallow them to be forced closely together on the pipe or tubing. Each ofthese clamping-arms has journaled in suitable bearings on its innersurface a beveled wheel E, to contact with and form corrugations in thepipe or tubing,

and are formed or provided at their inner or secured ends withtransverse projections e, which fit in the recesses g and g of the diskG, and act as pivot-points for said arms, whose central inner portionsrest on a circular spring R, which may be secured near its ends to oneor more of the clamping-arms, and serves to hold them normally a slightdistance apart, as is apparent by reference to Fig. 3.

It will be observed by reference to Fig. 4: that the recesses g areprovided with lateral oifsets or enlargements 9 into which the ends ofthe projections 6 will extend and be retained, while the recesses g arewithout said offsets to admit of the removal of each alternate arm, sothat a less number of corrugations may be formed, and also a smallerpipe or tubing may be operated upon by the wheel-carrying clamping-arms.The disk G is provided around its periphery with anumber of open slots gto correspond with the number of slots in the disk G, but are somewhatsmaller than the slots in the last-named disk, and prevent the armsbeing displaced longitudinally, yet will allowevery alternate arm to beremoved when desired. The disks G and G are hollow, as shown, for thepassage of the tube and mandrel or core, and are secured to the free endof the head H, which is externally screw-threaded and is secured at itsrear portion to the traveler B. Around the head H is placed ascrew-threaded collar H, to the periphery of which is secured a ring Hhaving on its front portion an annular flange h, between which flangeand the collar H is located a loose collar h, in which are secured thebolts f, on the other ends of which is fastened the collar I, whichactuates the clamping-arms. The ring H and collar H are provided atproper points with openings 7L2 for the insertion of a handspike orother instrument to turn the collar on the head H, when it is desired toadvance the collar I on the clamping-arms in order to force the wheelsthereof against the pipe or tubing. On the upper surface of the collar Iis secured a finger i to indicate on the scale a the depth of thecorrugations, which are to be formed in the pipe.

The operation of my machine is simple and as follows: The traveler andguide piece or plate B, forming a'carriage for the corrugatingmechanism, is retracted until the nuts D contact with the collarsOon thescrew-shafts, when the threads on said shafts will engage those on thesegmental releasing-nuts in the traveler. A piece of pipe or tubing isthen placed upon the corrugated core or mandrel, which may be securedtothe opposite end of the supporting-frame or otherwise, and is theninserted between the radially-arranged wheels E on the clamping-arms,which are forced into contact with the pipe or tubing by turning thecollar H on the headH, which will cause the ring or collar I to advanceon the clamping-arms E, which, as before stated, are curved outwardly,and force the wheels E against the pipe ortubing with such power as toproduce the desired corrugations, the depth of which corrugations willbe indicated by means of the finger t and the scale a employed for saidpurpose. The power is then applied to the pulley b or shaft b which willdrive the traveler and guide-piece B, carrying the corrugated mechanismforward on the main frame until corrugations of a sufficient length havebeen produced in the pipe or tubing, which will pass through the hollowopenings in the disk G G, head H, and traveler. \Vhen it is desired toretract or return the traveler and clamping mechanism to itsstarting-point, the traveler may be pushed forward to the positionindicated by dotted lines in Fig. 5, which will cause the segments ofthe releasing-nuts to be disengaged from the screw-shafts A, as isapparent, when the entire mechanism may be quickly and easily slid tothe startingpoint or rear portion of the supporting-frame. The collars0, being adj ustably secured on the screw-shafts by means of set-screwsc, are designed to be so placed as to act as buffers or guides for thereleasing-nuts D, so that their engagement with the screw-shafts will bepositive and easily accomplished.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination with a main frame, of a carriage movably mountedthereon, a series of arms radially arranged on said carriage, acorrugating-wheel journaled on each of the arms, means to force and holdsaid wheels in contact with the pipe or tube, and a screwshaft to propelthe carriage, substantially as described.

2. The combination with a main frame, of screw-shafts journaled thereon,means to operate said shafts, a traveler and guide-plate forming acarriage mounted on the screwshafts, a segmental releasing-nut pivotallysecured in the traveler near each of its ends and adapted to engage thescrew-shafts, a series of corrugating-wheels radially arranged on thecarriage, and means to force and hold said wheels in contact with thepipe or tube, substantially as described.

The combination with the screw-shafts, of a traveler provided with atapering opening near each of its ends, a tapering segmentalreleasing-nut pivotally secured to the traveler in said openings, andadapted to engage the screw-shafts and to be released therefrom,substantially as described.

4. The combination with the screw-shafts, of a mechanism to drive thesame, a traveler provided with a tapering opening near each of its ends,and recesses in its rear surface near said openings, a taperingsegmental releasing-nut pivotally secured to the traveler in saidopenings and adapted to engage the screw-shafts when advancing thereon,and to be released therefrom when desired, and springs located in therecesses in the traveler to hold the segments of the nut out ofengagement with the shafts, substantially as described.

5. The combination of the screw-shafts, with a mechanism to drive thesame, a traveler and guide plate or piece forming a carriage mounted onsaid shafts, a hollow screwthreaded head secured on the front of thetraveler, a series of clamping-arms pivotally secured at one of theirends to the head, a corrugating-wheel on each arm, a clampingcollararound the arms, a screw-threaded collar on the head connected with theclampingcollar, and having means to advance it on the head and theclamping-collar on the arms, substantially as described.

6. The combination of the screw-shafts, with a mechanism to drive thesame, a traveler and guide-plate forming a carriage mounted on saidshafts, a hollow screw-threaded head secured on the front of thetraveler, a series of clamping-arms pivotally secured at one of theirends to the head, a corrugating-wheel on each, arm, a clamping-collararound the arms, a screw-threaded collar on the head, a ring having anannular flange secured on the periphery of said collar, a loose ringencircling the head between the flange and screw threaded collar andconnected to the clamping-collar, and means to advance theclamping-collar on the arms, substantially as described.

7. The combination of the screw-shafts, with a mechanism to drive thesame, a traveler and guide-plate forming a carriage mounted on saidshafts, the guide-plate having a central opening and a series of radialgrooves around said opening, a hollow screw-threaded head secured on thefront of the traveler, a series of clamping-arms pivotally secured atone of their ends to the head, and having their other ends located inthe grooves of the A guide piece or plate, a corrugating-Wheel on eacharm, a clamping-collar around the arms, a screw-threaded collar on thehead connected with the clamping-collar, and having means to advance iton the head, and the clampingcollar on the arms, substantially asdescribed.

8. The combination with the disk G, having the recesses g, provided withthe enlargements g and the alternate recesses g, of the disk G, havingthe open slots g and secured on the disk G, the series of arms E, havingthe projections e, at one of their ends, the corrugating wheels E,journaled on said arms, and a spring to hold the arms normally apart,substantially as described.

9. A traveler provided with a tapering opening, and recesses near saidopening, a segmental tapering nut pivotally secured to the traveler inthe opening, and springs in the recesses to hold the segments out of thetaperin g opening, substantially as described.

SAMUEL S. SERGEANT.

\Vitnesses:

CHAS. (J. TILLMAN, E. A. DUGGAN.

